Chen Yunniang hid in the shadows, watching people walk by from time to time, and decided to wait a little longer.

When the night was deep and quiet, they dealt with Su Yujiao first, and then killed Gu Heng.

The three of them waited together until 9 PM, but the streets were pitch black and there wasn't a soul in sight.

There were still three quarters of an hour until their agreed-upon time of 9:45 PM, which was enough time to deal with Su Yujiao.

Just as Liu Wu was about to go in, Gu Heng appeared; he had arrived ahead of time.

"What do we do now?"

Chen Yunniang's gaze turned ruthless: "Take care of Gu Heng first."

"OK."

Liu Wu, dressed in black and masked, circled around the man from behind with a dagger, ready to deliver a fatal blow.

As a result, the man dodged the dagger with a nimble movement, and then quickly launched a counterattack.

The dagger in Liu Wu's hand was knocked away, and he was so shaken that he took several steps back.

However, his opponent gave him no chance to breathe, clenching his fist and attacking his vital point.

Liu Wu had already recognized who the other person was and didn't dare to fight him, otherwise he would immediately be exposed.

Seeing that the person had run away, Lu Ziqian bent down to pick up the dagger on the ground and discovered that it was engraved with Jin Dynasty characters. He immediately realized the seriousness of the situation.

His first reaction was that the Jin dynasty wanted to take advantage of the plague to muddy the waters.

"Oh no, little eunuch!"

He seemed to have thought of something, and quickly took a few steps and rushed into the courtyard.

The three people in the darkness were so frightened they didn't dare breathe. They never imagined that the person behind the bird-beak mask was actually Lu Ziqian!

Liu Wu was so frightened that his legs trembled. Luckily, he ran fast, or his life would have been in danger.

Inside the courtyard, Su Yujiao had just finished her work and was preparing to disinfect and change her clothes when she saw a person wearing a bird-beak mask rush in.

She instinctively assumed the person who came was Gu Heng.

Just as she was about to shout, Lu Ziqian spoke first: "Are you alright? There are spies from the enemy country infiltrated into the city."

Su Yujiao was terrified and broke out in a cold sweat. Luckily, she didn't speak first, otherwise she would have definitely given herself away.

When she was alone with Gu Heng, she never deliberately lowered her voice.

If she had spoken just now, Lu Ziqian would have definitely noticed.

Seeing that she didn't speak, Lu Ziqian assumed that the thief had already sneaked into the courtyard and looked around warily.

Su Yujiao realized what was happening and immediately shook her head to indicate that she was fine.

“They’re probably after the vaccine. We’re going to see the Crown Prince now.”

"Wait for me to change into some clean clothes."

Lu Ziqian looked delighted: "The antidote has been made?"

"Yes, I've tested it on myself. Next, I just need to test it on more people before it can be rolled out nationwide."

Soon, the two left the courtyard together.

Xiaohe asked anxiously, "Miss, what should we do now?"

"The plan was completely disrupted when the general arrived."

"Miss, if you rush up now and expose her identity, will there be a chance to turn things around?"

Chen Yunniang stared at the two figures from behind without saying a word, her mind a jumbled mess.

Given enough time, she would surely come up with a foolproof plan to prevent her from achieving merit.

But time was of the essence, and she couldn't think of a perfect solution.

I'm afraid that in the heat of the moment, I might make a lot of mistakes and expose the assassination attempt.

Moreover, even if Su Yujiao's identity is revealed now, Lu Ziqian will still take her to see the Crown Prince.

He wouldn't be so selfish as to disregard the lives of all the people in the world!

Therefore, she could only watch helplessly as the two went to see the Crown Prince.

The crown prince had already gone to bed, but upon hearing from his servants that Physician Su had created an antidote to control the plague, he excitedly walked out of his bedchamber barefoot.

"Doctor Su, have you truly concocted the antidote?"

Su Yujiao knelt down: "This humble subject has not failed the expectations of the people."

The Crown Prince personally helped her up, and was overjoyed to learn that Su Yujiao had successfully tested the medicine.

"Your Highness, all we need to do next is to have more people test it. If it works, we can roll it out nationwide."

"Once everyone is vaccinated against smallpox, there will be no fear of smallpox anymore."

"Very well, I will have someone test the medicine right away."

"Doctor Su, you have done a great service. Just tell me what reward you want."

Su Yujiao glanced at Lu Ziqian beside her, but dared not tell the Crown Prince directly.

"Your Highness, I do not seek any reward; I only wish to see Your Majesty's face."

The prince laughed heartily, realizing that even the highly skilled physician Su was not immune to the common practice.

Who among the common people wouldn't want to meet the Emperor and stroll through the palace?

"Alright, after the plague is over, I will personally take you to the palace to see Father Emperor."

"You have rendered such a great service; you deserve to receive a formal reward in the Golden Palace."

Next, Lu Ziqian reported the matter of enemy spies infiltrating the country before taking his leave.

"Ziqian!"

As soon as the two left the villa, they saw Chen Yunniang and her two companions, who looked travel-worn.

By this time, she had calmed down considerably and knew how to deal with the situation ahead.

“Yunniang, you shouldn’t have come. There are plague patients everywhere here.”

Chen Yunniang shook her head: "I am not afraid of the plague. Since I dared to come, I am prepared to sacrifice myself."

“I know I can’t be of much help, but it would be good if I could do some bandaging and decoction.”

"Ziqian, there's something I want to tell you. Can we talk in private for a moment?"

As she spoke, she gave Su Yujiao a strange look.

Before Lu Ziqian could say anything, Su Yujiao gave a sarcastic smile and left.

"Yunniang, we can talk about it later. I'll escort Physician Su back first. There's an assassination attempt tonight, so be careful."

As they were talking, Gu Heng arrived.

"Jiao... Brother Su, why did you come by yourself?"

"I just went to the courtyard and didn't see anyone. I thought something had happened to you," Gu Heng said with a worried expression.

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